How to remove bullet from cvlistdoubleitem?

Question

I was trying to make a 2 column list using cvlistdoubleitem but I could not remove the bullets.

\section{References}
\cvlistdoubleitem{a}{b}
\cvlistdoubleitem{c}{d}
\end{document} 

Answer 1

Don't use \cvlistdoubleitem. Use cvcolumns instead.
From moderncv examples:

\section{References}
\begin{cvcolumns}
  \cvcolumn{Category 1}{\begin{itemize}\item Person 1\item Person 2\item Person 3\end{itemize}}
  \cvcolumn{Category 2}{Amongst others:\begin{itemize}\item Person 1, and\item Person 2\end{itemize}(more upon request)}
  \cvcolumn[0.5]{All the rest \& some more}{\textit{That} person, and \textbf{those} also (all available upon request).}
\end{cvcolumns}

Answer 2

The default \cvlistdoubleitem is set with a symbol as defined in \listitemsymbol. You can remove this via a redefinition of \listitemsymbol:

\renewcommand{\listitemsymbol}{}

Note that this would affect the use of \cvlistitem as well, so you may want to limit the scope of this redefinition.